Question

PLEASE ANSWER ALL PARTS

1) Select the correct word or phrase to complete each of the following sentences about molecules on the surfaces of cells.

1. Blood groups, such as the ABO blood group, are based on the presence of  (Click to select)  antigens  cytokines  antibodies  pathogens  on the surfaces of cells.

2. Cells are identified as "self" or "nonself" based on the  (Click to select)  HLA proteins  blood type antigens  antibodies  pathogens  on their cell surface.

3. Most of the proteins on our cell surfaces are encoded by genes that belong to the  (Click to select)  major histocompatibility complex  cytokine family  antibody complex  ABO blood group  .

4. When a person receives an organ transplant, the transplant physician will compare the  (Click to select)  ABO blood group  HLA  antibody  cytokine  genes.

2)

Select benefits of using metagenomics to study genome sequences in pathogens in infectious disease.

Check All That Apply

Identify the pathogen to select appropriate treatmentIdentify the pathogen to select appropriate treatment

Identify the source of the pathogenIdentify the source of the pathogen

Identify individuals who may be infected but not yet symptomaticIdentify individuals who may be infected but not yet symptomatic

Stop the pathogen from mutatingStop the pathogen from mutating

3) Which of the following molecules are secreted by helper T cells?

Check All That Apply

InterleukinsInterleukins

InterferonsInterferons

AntibodiesAntibodies

Tumor necrosis factorTumor necrosis factor

PerforinPerforin

Colony-stimulating factor

Answer 1

1. Blood groups, such as the ABO blood group, are based on the presence of antigens on the surface of cells.

2. Cells are identified as"self" or "non self" based on the HLA proteins present on their cell surface.

3. Most of the proteins on our cell surfaces are encoded by genes that belong to the major histocompatibility complex .

4. When a person receives an organ transplant, the transplant physician will compare the ABO blood group .

3. The molecules secreted by helper T cells are Interleukins .

Interferon are produced by White blood cells.

Antibodies are produced by activated B cells called plasma cells.

Tumor necrosis factor are secreted by activated macrophages.

Perforin are produced by cytotoxic T lymphocytes and NK cells.